Scilab: fix test case member_pointer
Scilab: fix test case typemap_variables
Scilab: fix test case constructor_copy (and others)

Signed-off-by: Simon Marchetto <simon.marchetto@scilab-enterprises.com>
Scilab: fix test case autodoc
Scilab: fix test case li_std_vector
Scilab: C++ operators not wrapped in Scilab yet, remove warnings
Scilab: fix test case import_stl_b
Scilab: fix test case li_boost_shared_ptr